/*
 * Copyright (c) 2010-2012  The SUAsync Authors.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *   - Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *   - Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *   - Neither the name of the StumbleUpon nor the names of its contributors
 *     may be used to endorse or promote products derived from this software
 *     without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package com.stumbleupon.async;

import java.util.ArrayList;

/**
 * Exception used when one the {@link Deferred}s in a group failed.
 * <p>
 * You can create a group of {@link Deferred}s using {@link Deferred#group}.
 */
public final class DeferredGroupException extends RuntimeException {

  private final ArrayList<Object> results;

  /**
   * Constructor.
   * @param results All the results of the {@link DeferredGroup}.
   * @param first The first exception among those results.
   */
  DeferredGroupException(final ArrayList<Object> results,
                         final Exception first) {
    super("At least one of the Deferreds failed, first exception:", first);
    this.results = results;
  }

  /**
   * Returns all the results of the group of {@link Deferred}s.
   */
  public ArrayList<Object> results() {
    return results;
  }

  private static final long serialVersionUID = 1281980542;

}
